Final answer:
The risk response phase of an audit involves evaluating detailed testing results to form an opinion on a client's financial report, ensuring that they are free from material misstatements.
Step-by-step explanation:
The risk response phase of an audit primarily entails evaluating the results of detailed testing and forming an opinion on the truth and fairness of the client's financial report. This phase is critical in the audit process as it involves performing substantive testing for both transactions and account balances to gather sufficient evidence and forming conclusions based on this evidence.
The auditor must assess whether the financial statements as a whole are free from material misstatement, whether due to fraud or error, concluding in the auditor's report.